Andre Hedrick
The Linux IDE guy
On Tue, 24 Aug 1999, Jamie Lokier wrote:
> andre@suse.com wrote:
> > If the ISA-Bridge revision on any VIA chipset group is not 0x20 or
> > greater, UDMA is questionable.
>
> Miness 0x25, VP2/97 and pretty questionable. Locks up after an hour or
> two if I just enable DMA. I found `hdparm -X34 -d1' lets me use DMA
> without any hangs. Speed is markedly improved with it. Can't get UDMA
> at all though. Not a clue how. BIOS doesn't support it but disk does.
>
> I don't know if the recent chipset tuning stuff helps. Haven't tried
> removing the -X34 to find out.
>
> 00:00.0 Host bridge: VIA Technologies, Inc. VT82C595/97 [Apollo VP2/97] (rev 03)
> Flags: bus master, 66Mhz, medium devsel, latency 32
>
> 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586 ISA [Apollo VP] (rev 25)
> Flags: bus master, medium devsel, latency 0
>
> 00:07.1 IDE interface: VIA Technologies, Inc. VT82C586 IDE [Apollo] (rev 06) (prog-if 8a)
> Flags: bus master, medium devsel, latency 32
> I/O ports at ffa0
>
> enjoy,
> -- Jamie
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.rutgers.edu
> Please read the FAQ at http://www.tux.org/lkml/
>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/